<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"> </el-button>
          </el-input>
        </el-col>
        <el-col :span="4"><el-button type="primary" @click="addUserVisible = true">添加用户</el-button></el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="#"> </el-table-column>
        <el-table-column label="姓名" prop="username"> </el-table-column>
        <el-table-column label="邮箱" prop="email"> </el-table-column>
        <el-table-column label="电话" prop="mobile"> </el-table-column>
        <el-table-column label="角色" prop="role_name"> </el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽 -->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"> </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total"> </el-pagination>
      <!-- 添加用户弹出对话框区域 -->
      <el-dialog title="添加用户" :visible.sync="addUserVisible" width="50%" @close="addUserClose">
        <!-- 内容主体区域 -->
        <el-form :model="addForm" :rules="addRules" ref="addFormRef" label-width="100px">
          <el-form-item label="用户名称" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addUserVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 修改用户弹出对话框区域 -->
      <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机号" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 分配角色对话框区域 -->
      <el-dialog title="分配角色" :visible.sync="roleDialogVisible" width="50%" @close="roleDialogVisibleClose">
        <div>
          <p>当前的用户:{{ userInfo.username }}</p>
          <p>当前的角色:{{ userInfo.role_name }}</p>
          <p>
            分配新角色:
            <el-select v-model="selectRolesId" placeholder="请选择">
              <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"> </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="roleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRolesInfo">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>
<script>
export default {
  data() {
    // 验证邮箱规则
    var checkEmail = (rule, values, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if (regEmail.test(values)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入正确的邮箱'))
    }
    // 验证手机号规则
    var checkMobile = (rule, values, cb) => {
      // 验证邮箱的正则表达式
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(values)) {
        // 合法的手机号
        return cb()
      }
      cb(new Error('请输入正确的手机号'))
    }
    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制弹出对话框显示与隐藏
      addUserVisible: false,
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      addRules: {
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制弹出修改对话框显示与隐藏
      editDialogVisible: false,
      // 根据id获取到的用户数据
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入用户邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入用户手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      roleDialogVisible: false,
      // 分配角色的用户对象
      userInfo: {},
      // 所有角色的列表
      rolesList: [],
      // 已选中角色的id
      selectRolesId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 获取用户数据列表
    async getUserList() {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败')
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关状态的改变
    async userStateChange(userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更改用户状态失败')
      }
      return this.$message.success('更改用户状态成功')
    },
    // 监听添加用户对话框的关闭事件
    addUserClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户事件
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        // 重新获取用户列表数据
        this.getUserList()
        // 隐藏添加用户框
        this.addUserVisible = false
      })
    },
    // 点击修改按钮事件
    async showEditDialog(id) {
      this.editDialogVisible = true
      // console.log(id)
      // 通过id查询用户的信息
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('获取修改用户信息失败')
      }
      this.editForm = res.data
    },
    // 监听修改表单关闭事件
    editDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        // 发起修改用户信息的请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        this.$message.success('更新用户信息成功')
        this.getUserList()
        this.editDialogVisible = false
      })
    },
    // 根据id删除用户
    async removeUserById(id) {
      // 弹窗询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 确认删除返回字符串为confirm
      // 取消删除返回字符串为cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      this.getUserList()
    },
    // 分配角色对话框
    async setRole(userInfo) {
      // 获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      this.userInfo = userInfo
      this.roleDialogVisible = true
    },
    // 保存用户的新角色
    async saveRolesInfo() {
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectRolesId })
      if (res.meta.status !== 200) {
        return this.$message.error('设置角色失败')
      }
      this.$message.success('设置角色成功')
      this.roleDialogVisible = false
      this.getUserList()
    },
    // 监听分配角色对话框的关闭
    roleDialogVisibleClose() {
      this.selectRolesId = ''
      this.userInfo = {}
    }
  }
}
</script>
<style lang="less" scoped></style>
